Cynora, TADF will contribute to high-resolution implementation of OLED devices and panel cost reduction

At the Global Materials Tech Fair 2017 held on September 22 in COEX, CEO Ko Chang-hoon of EM Index, Cynora’s Korean partner, announced the development of the thermally activated delayed fluorescence, blue TADF, which is currently under development at Cynora.

<CEO Ko Chang-hoon of EM Index>

Generally, the blue light emitting material is insufficient in life and efficiency compared to red and green. For this reason, OLED panels for mobile devices are manufactured relatively large in blue pixel size compared to other pixels, in the OLED panel for TV, blue light emitting layers are laminated twice. The blue TADF is the material that is being developed to overcome the limitations of this blue light emitting material.

CEO Ko Chang-hoon mentioned “Applying blue TADF increases lifetime and efficiency, so it does not need to increase pixel size and it is advantageous for high resolution implementation” and emphasized “In mobile devices, it will be advantageous to reduce power consumption as well as realize high resolution and in case of TV, it will be advantageous to reduce the panel cost because only one layer of blue light emitting layer needs to be formed.”

He referred to the recent investments of € 25 million from Samsung Venture Investment and LG Display and explained that it was a proof that blue TADF is attracting a lot of attention.

It is also close to the efficiency, lifetime and color purity of the blue TADF required by major OLED panel makers and is expected to meet these requirements by the end of 2017.

<Cynora’s blue TADF development progress>

Finally, the company announced the development roadmap for the green TADF by the end of 2018 and the red TADF by the end of 2019, and concluded by emphasizing that TADF would contribute to high-resolution implementation of OLED products and panel cost reduction.

<Cynora’s TADF product development roadmap>

AUO unveils round OLED and foldable OLED for the smart watch in Touch Taiwan 2017

AUO showed the OLED that can be collapsible and three kinds of round OLEDs (1.2-inch, 1.3-inch, 1.4-inch) for the smart watch in Touch Taiwan 2017 held on 20th.

The round OLEDs in 1.2-inch and 1.4-inch of AUO are 326ppi, and it lowers an electric consumption at 30% versus former production goods. AUO also improves the visibility capacity in outdoor by embedding the brightness increase mode to make a display screen of two kinds of round OLEDs be clear even under bright sunlight.

The 1.3-inch OLED aimed at the smart watch for kids is light in weight, and strengthens the usability with a power saving mode and an intuitive touch interface function.

AUO displays two types of 5-inch flexible OLEDs that can be rolled or folded. Such two types of 5-inch flexible OLEDs apply the plastic board and AUO self-developed structure (special structural layer).

<AUO, 5 inch foldable OLED touch panel>

The 5-inch foldable OLED combines a flexible touch screen sensor that is developed by AUO itself.  The company said “it would provide excellent image quality, even if the curvature radius of the folded part is 4mm and less”.

For 5-inch rollable OLED, they explained “The thickness of the panel is just 0.1mm and only 5g. This model with the rolling radius of 4mm will provide wide color gamut”.

In last SID 2017, AUO has announced about that they applied the structure locating the TFT (Thin Film Transistor) and TFE (Thin Film Encapsulation) at the neutral axis to stand the compression stress or tensions during being folded.

Fraunhofer Institute will introduce automotive flexible OLED lighting at ISAL 2017

Specialized in development and manufacturing OLED module, Fraunhofer Institute will introduce Automotive flexible OLED lighting with adjusted color at ISAL 2017 which will be held in Darmstadt, Germany from 25th to 27th September. Fraunhofer Institute had released previously OLED which the color can be adjusted by rigid substrate in 2015.

Fraunhofer Institute has continued to develop flexible OLED lighting since then. Flexible OLED lighting which will be shown at ISAL 2017 is known to be changed to yellow and blue color. It can be shown as white light by making of yellow and blue color at the same time.

Fraunhofer Institute predicts that flexible OLED lighting will be replaced for car interior lights and it could also be used on the ceiling or winding parts where lights cannot be built easily. Commercial lighting is required to have heatsink and unfortunately it can not be easily built with lack of flexibility in design. However flexible OLED lighting is very light and thin which means it is expected to be widely used for Automotives interior with its flexible design. Fraunhofer Institute also made a comment that they may produce flexible OLED substrate glass, metal and plastic film as well.

OLED lighting has been recently used for Automotives interior and it is expected to be used more in the next generation. Customized Automotive service company, Changscustom showed OLED lighting built in the car at Seoul Auto 2016. Furthermore lighting companies including LG Display and Osram supplied OLED tail light with Mercedes-Benz and BMW.

Meanwhile, according to 2017 OLED Lighting Annual Report which was recently published by UBi Research, using of Automotive OLED Lighting will be increased to $2.11 billion in 2025 from $6.4 million in 2017 with 107% of growth rate. Especially flexible OLED Lighting is expected to capture a higher market share more than 95% and flexible OLED Lighting will be widely used instead of rigid OLED lighting.

Starting to have mass production process in Gen5 OLED of LG Display from end of September, lighting market is expected to reach full growth. The growth of OLED lighting market is being watched with keen interest to compare with strong growth of OLED display market.

UBi Research, Lee Choong-Hoon, CEO, announce OLED market and forecast

Mr. Choong-Hoon Lee, the CEO of UBi Research, OLED specialist presented the market trend and prospects of the OLED industry following last year at the Japan Conference, host by Merrill Lynch Japan Securities, from 5th to 7th of September in Tokyo, Japan. The annual conference was held for Merrill Lynch Securities customers, consisting of a forum-type presentation on major industry trends in Japan and small meetings with presenters.

The fact that Mr. Lee, the CEO of UBi Research was invited to the event indicates the importance of the display market, not just in the IT industry but also in the global market industry. Among investors in recent years, display is in the spotlight at as an emerging industry and participants have shown their interest in the latest OLED technology trend as well as current and future production scale of OLED panel manufacturers.

Mr. Lee was also had an interview with Nikkei Business Publication regarding “Global OLED Market Trend and Forecast” during the conference. The main interview question is focused on “OLED industry trend and future OLED TV market development”. According to Naoki Tanaka, editor of Ronny Keikyo Newspaper, Japanese electronics industry is expecting to revive the old glory of display industry, showing its interest in the OLED industry and OLED TV.

In the interview, Mr. Lee stressed, referring to the market data in the UBi Research OLED display report, that Japanese display manufacturers who still believe perpetuation of LCD need more reliable OLED market analysis.

In addition, he said that through the exhibition trend of OLED TV at 2017 IFA held in Berlin, Germany it is worthwhile paying continuous attention to the premium OLED TV market in the future. At the end of the interview, he emphasized how important OLED production by Japanese panel manufacturers would be to Japan’s entire display and set industry.

UBi Research publishes a monthly report on a variety of topics of OLED industry, market, and technology trend, and draws more and more attention along with the recent OLED market expansion. For more information, please contact UBi Research (info@ubiresearch.com); useful sample reports and information are provided.

UBI research publishes 2017 OLED lighting report : LG Display, ready to mass-produce OLED light panel, expecting OLED lighting market to grow fast

LG Display starts mass production of 5G OLED panel for lighting from the end of September

■ OLED lighting panel market is projected to grow from US$ 1.9billion in 2021 to US$ 5.8billion by 2025

 

LG Display will start mass production of 5G OLED light panels from the end of September, therefore attention is focused on whether the OLED lighting market is growing rapidly. According to LG Display, monthly production capacity is 15K, and it is to be increased to 90K later.

 

According to the ‘2017 OLED Lighting Annual Report’ published by UBI Research on August 8, the global OLED lighting panel market is expected to grow to about US$ 1.9 billion by 2021. Furthermore, it is projected to have a CAGR of 85% for the period 2017-2025, and form a market of US$ 5.8 billion in 2025.

Because OLED lighting is thin, light and flexible, it does not limit the installation space and has excellent design autonomy. In addition, OLED lighting is used for automotive, exhibition, and medical as well as general indoor lighting because it can create a comfortable atmosphere with little heat and flicker.

 

However, the market for OLED lighting has been slower than that of OLED display, which is widely applied to mobile devices and TVs. Osram focuses primarily on automotive OLED lighting, and Philips sold its OLED lighting division to OLEDWorks. Also, Japanese panel makers such as Sumitomo Chemical and Konica Minolta have developed OLED lighting for industrial and medical applications. Nevertheless, it seems to take time for OLED lighting to become eventually a large market.

With LG Display’s mass production of Gen5 OLED line, the price of OLED light panel is estimated to drop below US $ 10 (100 x 100 mm). The significant price competiveness might enable OLED panels to be applied to various areas such as automobile and display lighting as well as indoor lighting. Owing to this expectation, attention is focused on whether the OLED lighting market, showing signs of slow growth, can be materialized.

UBI Research predicted that LG Display would account for about 70% of the world’s lighting OLED panel market in 2017, and will continue to lead the OLED lighting panel market with a 50% market share in 2020.

 

Meanwhile, ‘2017 OLED Lighting Annual Report’ describes trends of next-generation lighting market, promising applications, cost analysis upon the investment of LG Display and forecast of OLED lighting market. Since it analyses particularly OLED lighting market, materials market, and equipment market forecasts for OLED lighting from various perspectives, it is expected to help the related companies identify the OLED lighting market.

<Sales forecast for total OLED lighting panels>

LG DISPLAY, Will lead global TV market with OLED

LG Display invited about 200 people of Chinese set makers, distributors and related experts and had ‘OLED Partner’s Day’ to share the status of premium TV market and OLED TV business development at Renaissance Capital Hotel in Beijing, China on September 12.

<Source : LG Display>

In the expert forum on the day, key executives from distribution and set makers such as LG Electronics, Sony, Philips, Skyworth, Suning and related organizations such as electronic committee and awards association participated and agreed that OLED will lead the TV market in the future. Forum participants, Liu Tangz(刘棠枝), CEO of Skyworth, said “The Chinese TV industry is currently in a state of saturation, but OLED TV, which can offer new value, will be a breakthrough in the display industry,” and commented “OLED TV will help increase brand awareness and market share.”

Yeo Sang-Deog, LG Display CMO, said, “OLED TV has already become the market trend” and emphasized “We will lead the market with OLED TV, a true future display that can deliver value beyond TV.”

Since LG Display began mass production of OLED TV panels in 2013, it has expanded its customer base to 13 major companies in Europe, Japan and China, starting with LG Electronics. World TV set makers such as LG Electronics, Skyworth, Concha, Philips and Panasonic have set OLED TV products on the front at the IFA (International Consumer Electronics Show) 2017 in Berlin in early September.

OLED TV’s market competitiveness is getting higher as major set makers in the world recognized the value of OLED TV, which has various advantages such as image quality, thickness, design, viewing angle and power consumption and aggressively launch products.

Yeo Sang-Deog CMO emphasized the confidence in quality, he added, “In addition to securing stable yields, we will increase the output to 1.7 ~ 1.8 million units in 2017 and 2.5 million units in 2018.” and explained that they finished all the preparations that OLED TV can influence in terms of production.

<Source : LG Display>

OLED TV has been rated as one of the best products by the world’s leading professional rating agencies such as ‘Consumer Report’, a nonprofit consumer organization in the US.

OLED TV can be used for interior decoration that displays pictures and photos even when not watching TV, and easy to apply on various AI platforms so that there is no limit to the range of applications. LG Display expects OLED TVs with infinite scalability to change the lifestyle of consumers.

“OLED is a true future display that can deliver new value to the TV market,” said Yeo Sang-Deog CMO and “LG Display plans to carry out a variety of promotional activities to enable more consumers to know and experience the value of OLED.”

LG Display plans to build an OLED landmark in Guangzhou Tower while operating an OLED experience center in the core city of China.

Meanwhile, Vincent Teoh, editor-in-chief and image quality expert at HDTV Test, explained that the TV picture quality test conducted recently proved the overwhelming superiority of OLED TV in all aspects such as contrast and color accuracy, famous Chinese photographer Tungmeong (童梦) shared the experience of use from the user perspective that OLED is the best display to realize the natural color.

On the he other side of the event hall, there prepared the experience zone that can compare structure and image quality of OLED, gallery that can be observed high-end products such as CSO and wallpapers TV and products released by customers allowing attendees to directly experience the benefits of OLED TV.

Material Science to develop blue dopant for OLED … OLED Efficiency ⋅ Lifetime Up↑

A Korean venture company has succeeded in developing blue dopant for Organic Light Emitting Diodes (OLED) that a Japanese company has had its exclusive patent for. The dopant is an element that improves efficiency and life time by mixing with host that actually colors within the OLED.

In the meantime, many domestic material companies have developed OLED host, but it is the first case that a venture company has independently developed dopant on a commercial scale without receiving any support of large corporations.

 

Material Science (CEO Lee Soon-chang), an organic material developer for OLED has developed a technology that can replace Japanese I Company’s patent for blue dopant. Established in 2014, Material Science is supplying HTL( Hole Transporting Layer) and ETL (Electron Transfer Layer) to OLED panel makers.
Half of the 50 employees are R&D personnel. Last year, its sales were 6.6 billion won, and it is expected to exceed 10 billion won this year.

This time, due to the development of blue dopant by Material Science, OLED panel companies have an alternative to supply blue host and dopant besides I Company.

Japanese I Company has been developing blue dopant since 1995. At present, the company has more than 30 patents related to blue dopant (based on Japanese application for a patent), and its major 8 patents are valid until 2034. In particular, it has an exclusive patent for the combination method of blue dopant that includes blue host and pyrene with an anthracene structure (a compound in which three benzene rings are sequentially bonded). For this reason, the panel makers which purchase dopant from I Company must buy its host. If they mix I Company’s blue dopant with another company’s host, it is inevitable to infringe the patent in the case a host material has an anthracene skeleton.

Both Samsung Display and LG Display have been using I Company’s blue dopant and host.

The blue dopant developed by Material Science is designed to make molecules that are completely out of I Company’s compound patent. Conventionally, the method of applying an electron acceptor to a molecule has been used to improve the efficiency and lifetime of OLED and have a blue color.
On the other hand, Material Science introduces electron donor into molecules to improve the efficiency and lifetime while generating dark blue color. This dopant greatly reduces the solvent-dependent color development (solvatochromism) where emission wavelength changes due to the polarity of the surroundings. Therefore, the change of emission wavelength is also greatly reduced.

Jung Jae-ho, a researcher at Material Science said, “We have developed a new structure and a synthesis method, which makes it possible to produce its differentiated dopant.” “Panel companies are now able to utilize various types of blue hosts”. In addition, Material Sciences has been recently developing TADF(Thermally Activated Delayed Fluorescence) that OLED panel makers are struggling to introduce for the longer life of blue-emitting phosphors.

<OLED emitting material market forecast, UBi Research>

According to UBi Research, the OLED organic market is expected to reach $ 3.36 billion by 2021 (about 3.8 trillion won). And blue materials account for 11.5% of total sales.

[iMiD 2017] Samsung Display, Huge release of application using OLED

Samsung Display has received great attention by releasing a large number of applications using OLED such as VR and light field display in iMiD 2017 held in BEXCO, Busan from 28th to 31st August.

<Samsung Display booth>

First, Samsung Display comparatively exhibited a 3.5-inch OLED with 460ppi resolution for virtual reality and an 806ppi 3.2-inch OLED. A company official said “The higher the ppi, the better the experience of realism and immersion,” and mentioned “We are currently developing higher resolution OLEDs.”

<Comparison of 3.5 inch 460 ppi OLED and 3.2 inch 806 ppi>

In addition, Samsung Display exhibited OLED light field displays in the future display zone, and in the AMOLED zone, visitors can directly compare LCD and OLED.

A company official explained that “light field display is a technology that implements 3D by applying an optical lens on a panel, which is a little different from hologram using light interference effect.” And he said “We are developing a viewing angle that is wider than 30 °,” revealed “We now have pixel and lens alignment issues and optical design issues.”

<OLED light field display description and specification>

In the AMOLED zone, panels were displayed to directly compare the contrast ratio of LCD and OLED. The contrast ratio and color expressiveness of the OLEDs were clearly different from those of the LCDs, and a company official said, “These differences are the reasons why OLEDs are used in the Galaxy series.”

<Comparison of OLED (Left) and LCD (right) image quality>

Samsung Display has also introduced 1.3 inch circle OLED and 12 inch FHD OLED, which led to the great interest of the visitors during the exhibition.

[iMiD 2017] LG Display, Spur Development of 77 inch transparent flexible OLED

LG Display’s Kwon Se-Yeol senior researcher introduced the 77-inch transparent flexible OLED which had been introduced in June at IMID 2017 held in BEXCO, Busan on Aug. 30, and announced the applied technologies to realize this.

Kwon Se-Yeol senior researcher mentioned, “OLED is self-luminous, so it can be manufactured with a thin thickness because it does not need a back light unit. The thinner the thickness, the more flexible the OLED can be so that it is easy to implement flexible displays with OLEDs.” and forecasted. “It can be used in various fields such as signage and smart desk.”

The 77-inch transparent flexible OLED which is released this time is a top emission type for improved luminance. The transparent thin film encapsulation layer is applied, different from the conventional OLED TV or large flexible OLED, and two polyimide substrates are used.

Kwon Se-Yeol senior researcher said “We applied a transparent thin-film encapsulation layer instead of the existing metal encapsulation layer for the top emission method ” and explained “A white OLED light emitting layer and a color filter layer were formed on two polyimide substrates and cemented together. A barrier film and a multi-barrier were applied to the top and bottom of the polyimide substrates to prevent moisture and oxygen penetration.”

The Kwon Se-Yeol senior researcher then states that “flexural rigidity of the panel is mainly affected by the thickness of the polarizer and the encapsulant layer, so it is necessary to reduce the thickness in order to improve the flexibility”, and emphasized “By reducing the thickness of the encapsulant layer from 100 μm to 20 μm, we can reduce the strain on the OLED module from 0.36% to 0.21%, along with improved flexibility”.

In addition, he mentioned that surface reflection due to polyimide birefringence phenomenon, laser wavelength selection according to polyimide properties in LLO (laser lift off) process, and use of flexible OLED module are all covered, and technical development is continuing.

Meanwhile, LG Display has developed the world’s first 77-inch transparent flexible OLED with UHD (3840 × 2160) resolution, transmittance of 40%, and radius of curvature of 80R as part of the national project.

[iMiD 2017] OLEDON, Disclose plane source FMM deposition principle for 2250ppi OLED manufacturing

Prof. Hwang Chang-Hoon, CEO of OLEDON, a venture laboratory of Dankook University, presented a plane source FMM deposition technology capable of implementing 2250 ppi at iMiD 2017 held on the 28th.

According to Prof. Hwang Chang-Hoon’s presentation, the plane source deposition technology developed by OLEDON differs from the existing organic material deposition method. The plane source FMM deposition technique is that the organic material is first deposited on the metal surface to form a donor film and then re-evaporate it to form an organic thin film on the substrate. Applying this technique, organic matter forms a vertical gas beam due to plane evaporation. (Source patent: 1012061620000 Republic of Korea)

The shadow distance when organics are deposited with a plane source developed by OLEDON is 0.38 μm – 0.59 μm. This is a level at which a 2250ppi device having a pattern size of 4 um can be manufactured.

Prof. Hwang Chang-Hoon explained ‘applying the plane source deposition technique reduces the incidence angle of the organic material and dramatically reduces the shadow caused by the mask’. In addition, ‘using a plane source, the perpendicular organic gas beam can form a completely zero incident angle, so theoretically, the shadow distance can be zero um’.

<Principle of plane source deposition technology developed by OLEDON>

In addition, Prof. Hwang Chang-Hoon emphasized that ‘plane source deposition technology is essential for high-resolution shadow masks’.

For linear source FMMs currently in production, the shadow mask opening distance is 80 μm. As a result, the incidence angle of the organic material gas is inevitably large, making it difficult to produce a shadow mask having a high density pattern.

Prof. Hwang Chang-Hoon explained, ‘Using plane source deposition technology, shadow mask taping angle is 80 ° level’, and the distance between openings can be reduced to less than 20 μm so that plane source deposition techniques can solve the mask pattern density problems of linear sources’.

OLEDON is challenging fully shadow-free patterning conditions with plane source deposition technology, and plan to develop and install a plane source FMM evaporator capable of manufacturing 11K class micro OLED devices in cooperation with Prof. Jin Byung-Doo in Dankook University. (Reference: Homepage of OLEDON www.oledon.co.kr)

<The opening density change of the shadow mask when the plane source FMM deposition technique is used>

Meanwhile, OLEDON has 13 registered patents for plane source FMM deposition for mass production. Based on recent research results, they filed 7 new patents for mass production equipment in Korea and 3 applications are filed for PCT international application.